Buy ‘filter’ with Bitcoin Crypto-Currency – Spendabit

16-Inch Above Ground Swimming Pool Sand Filter System with 0.75 HP Pump - 16"

$723 at Overstock.com

12-Inch Above Ground Swimming Pool Sand Filter System with 0.25 HP Pump - 12"

$438 at Overstock.com

16-Inch Top Mount Swimming Pool Sand Filter with 6-Way Valve - 16"

$347 at Overstock.com

32.75" Swimming Pool Replacement Filter Cartridge

$289 at Overstock.com

25.5" Swimming Pool Replacement Filter Cartridge

$243 at Overstock.com

3M HCMAP002 High Clarity Privacy Filter for 27" Apple iMac

PF24.0W9 Privacy Filter Black

$147 at Tietokonekauppa.fi

Bubble Magus Automatic Roller Filter ARF-S / ARF-M / ARF-L

$126 at Aquarium Low Cost

PF23.0W9 Privacy Filter Black

$140 at Tietokonekauppa.fi

Katadyn Hiker Pro Water Filter – Transparent

$144 at Benny's Boardroom

vidaXL Multiport Valve for Sand Filter ABS 1.5" 6-way

$113 at Overstock.com

iSpring 1 Year Replacement Set Ultra Filtration Water Filter, Whilte

$104 at Overstock.com

Kensington MagPro Privacy Screen Filter - For 23" Widescreen LCD Monitor - 16:9

iFi LAN iSilencer | Ethernet Noise Filter

$89.00 at Bloom Audio

BUNN Paper Filter

$96.96 at Newegg

GE MWF Refrigerator Water Filter Compatible by BlueFall

$108 at Overstock.com

iSpring 10''x2.5'' Sediment Filter Replacement Cartridges (Case of 50)

$90.72 at Overstock.com

Fellowes Blackout Privacy Filter, 23.8", Black 4816901

iSpring 10''x2.5'' Sediment Filter Replacement Cartridges (Case of 50)

$93.07 at Overstock.com

LENOVO ThinkPad 14.0" W9 3M Laptop Privacy Filter Desgined for Lenovo

$79.54 at Tietokonekauppa.fi

iSpring Countertop Multi Filtration Drinking Water Filter System

$70.29 at Overstock.com

BUNN 20132.0000 Commercial Coffee Filters

StarTech 23.6" 16:9 Computer Monitor Privacy Screen Filter 23669PRIVACYSCREEN

$79.99 at Newegg

True HEPA Replacement Compatible with Rabbit Air MinusA2 Filter Kit, Pet

$63.17 at Overstock.com

GE MWF Refrigerator Water Filter Compatible by BlueFall

$66.72 at Overstock.com

iSpring Water Filter Replacement Pack for Whole House System20''x2.5''

$62.99 at Overstock.com

True HEPA Replacement Compatible with Rabbit Air MinusA2 Filter Kit, Germ - White

$60.29 at Overstock.com

LivePure True HEPA Replacement LP-HF550 Filter for Bali Series Air Purifiers LP550TH, LP550THP

$70.20 at Overstock.com

Optimus U33100 Humidifier Replacement Wick Filter for U-33100

$78.99 at Newegg

Laser 48021 Fuel Filter Fits Stihl 1115-350-3503 1115 350 3503

$74.99 at Newegg

Fellowes True HEPA Filter with AeraSafe Antimicrobial Treatment

$46.99 at Newegg

HOOVER 40140201 1 Pack Long-Life HEPA Cartridge Filter

$43.99 at Newegg

FELLOWES 9287001 HEPA Filter with AeraSafe Antimicrobial Treatment for AeraMax 100 Air Purifier

$41.99 at Newegg

Anti-glare Filter for 24IN WS

$67.99 at Newegg

Filter-Monster Replacement for Comfort Zone H6 filters - N/A

$39.99 at Overstock.com

True HEPA Replacement Compatible with Rabbit Air MinusA2 Filter Kit, Pet

$64.68 at Overstock.com

StarTech 13" Magnetic Privacy Filter for MacBook PRIVSCNMAC13

$42.99 at Newegg

Mi Air Purifier Hepa Filter (SCG4021GL) (XIASCG4021GL)

$34.69 at Storeio.gr

iSpring Countertop Multi Filtration Drinking Water Filter System

$37.52 at Overstock.com

Kaz HRF-F1 Replacement Filter

$40.99 at Newegg

Epson America V13H134A45 Replacement Air Filter

$43.99 at Newegg

Rice Bowl Drain Basket Mesh Strainer Colander Food Filter Basket 2Pcs

$33.99 at Overstock.com

Rice Bowl Drain Basket Mesh Strainer Colander Food Filter Basket 2Pcs

$34.49 at Overstock.com

4" Aroma Basket Filter

$52.17 at StillDragon

BNX 16x25x1 MERV 13 Pleated Air Filter - Made in USA - Electrostatic Charged HVAC AC Furnace Filters - Removes Pollen, Mold, Bacteria, Smoke (4 Pack)

$45.99 at Newegg

Intex 29001E PureSpa Type S1 Easy Set Spa Filter Replacement Cartridges, 10 Pack

$29.99 at Overstock.com

Filter-Monster True HEPA Replacement for Holmes HAPF600 Console Allergen Remover Filter, 2 Pack - White

$29.49 at Overstock.com

FlowXtreme Cotton Tails Filter Media 0.75-lbs (Replaces 25-lbs. Sand) - Multi

$38.49 at Overstock.com

FlightAware 1090 MHz ADS-B Bandpass SMA Filter

$31.78 at The Pi Hut

FlightAware 978-1090 MHz ADS-B Bandpass SMA Filter

$47.00 at The Pi Hut

Drinkpod Alkaline Water Pitcher 2.5L Capacity Includes 3 Filters

$36.94 at Overstock.com

Fellowes 9370101 True HEPA Replacement Filter for AP-300PH Air Purifier

$47.99 at Newegg

Wick Filter (Set of 2) for SU-9210

$23.99 at Newegg

Drinkpod Alkaline Water Pitcher 2.5L Capacity Includes 3 Filters

$38.94 at Overstock.com

Culligan FM-15A Faucet Water Filter

$34.79 at Overstock.com

LivePure True HEPA Replacement Filter for Aspen Air Purifier - White

$47.98 at Overstock.com

BUNN BCF/100-B Coffee Filter

$21.73 at Newegg

New Dirt Devil F1 HEPA Filter, 3JC0280000

$32.99 at Newegg

6pcs 22mm Universal Male Faucet Aerator Replacement Water Filter - Silver Tone - 22mm Male 6pcs

$15.99 at Overstock.com

OPTIMUS U-30011 Humidifier Replacement Wick Filter for U-33015

$29.99 at Newegg