Europe
- SkinFlint : Price comparison site which has some nice filtering options per switch type etc. Searches for offers in UK, Germany, Poland and Austria
- mykeyboard.eu : Keyboards, keycaps and accessories. Based in Belgium.
- candykeys.com : European Store selling Vortex, Leopold, KBP, Anne Pro keyboards, keycap sets and components (ISO + ANSI). Based in Germany, ships to EU.
- falba.tech : custom wooden bamboo cases, and some acrylic and carbon ones. Switch packs (65 browns at 48EUR). Other parts for the GH60, Atreus, ErgoDox. Also Microcontrollers, diodes, leds etc.
- 42keebs.eu - Mostly PCBs, tools and accessories. Located in Czech Republic.
- KEYGEM : Switches, Keycaps, lubes, cables, DIY kits and deskmats. Based in Germany, ships to the EU and worldwide.
- Eloquent Clicks - Custom Mechanical Keyboard Store : Store based in Spain. Keyboards, cases, keycaps, switches, stabilizers, PCBs and other accessories. Group buys as well.
- theteleport.de : Manufacturer of custom keyboards and ISO DE keycaps based in Germany.
- ANVIL is manufacturer of entry level custom (gaming) mechanical keyboards, company located in germany. Shipping to DACH region.
- Oblotzky Industries : Group buys, keycaps, limited items such as switches, deskmats and keyboard bags in stock. Based in Germany.
- STHLM kb : Selling through hole keyboard kits and some components. Sweden based, shipping globally.
- Centorek : Based in Poland, selling Krytox and TriboSys lubricants, keyboard parts, tools and other accesories.
- SplitKB What's in a name: sells split keyboards and has accessories. DIY focused. Netherlands based.
- Peripheral and Electronics shops which also sell (popular/gaming) Mechanical keyboards
- getdigital.de : fast shipping, good enough prices. Currently offers Das, Ducky, Filco, Matias keyboards and some keycaps
- cclonline : Ducky, Coolermaster and others, Cougar, Gamdias, iKBC, Cherry, Vortex
- MaxGaming : selling all sorts of gaming gear etc. but they've been lately adding more and more custom keyboard stuff.
- Amazon European sites : Amazon Germany, Amazon France, Amazon Italy, Amazon Spain, Amazon Netherlands
- Check also the Amazon price comparison sites: camelcamelcamel DE, camelcamelcamel IT, camelcamelcamel ES, camelcamelcamel FR
UK
- Check r/MechanicalKeyboardsUK - The UK community for mechanical keyboards
- mechbox.co.uk : UK stationed, supplies of parts, tools, switches and testers. Huge collection of switches including customs (MOD, Zealios, Aristotles etc.)
- MechSupply - Products : sister-site of UK keycaps. Some plates, keycaps and switches. Group buys as well.
- The Keyboard company - keyboardco.com (UK)
- mechboards.co.uk : Switches, Keycaps, Cases, Plates, DIY Kits
- Peripheral and Electronics shops which also sell (popular/gaming) Mechanical keyboards
- Overclockers.co.uk : iKBC, Vortex, Filco, Ducky, Das, Cougar, CoolerMaster
- Amazon UK and camelcamelcamel UK
Russia
- Ergohaven being mentioned on r/ErgoMechKeyboards for Ergonomic keyboards (introduced in the reddit post here)
Second-hand
- r/Mechmarket Subreddit : check what is on offer (check the [EU] in the title), or post what you want to get and state that you are in EU.
- Ebay : you can find some second-hand keyboards, keycaps, and other components from UK or Germany
Chinese shops
- The bigger ones: AliExpress, banggood, Gearbest.
- TaoBao : Chinese language only and you usually need a proxy to locate a product and reship. Qtan is a famous guy who is a trustful proxy. He has also a site here: http://www.vendio.com/stores/E-sports-Gaming-equipments/contact and also sells on Ebay.
- https://www.yunzii.com/ : free shipping to EU above $45 (but beware of customs). They offer everything from kits, complete keyboards, through key-caps/switches into desk-mats and cables.
Japanese shops
i.e. if you want a Topre board or an Elecom Trackball
- Amazon Japan : priority shipping is usually around 8-15€ (5-7 days). Customs tax should be high but the last time we only paid 5€ for a 45€ trackball (maybe Amazon has found a way to import to another European warehouse first?)
Add https://42keebs.eu/
Mostly PCBs, tools and accessories.
Located in Czech Republic, not a big selection but quite reasonable prices. Delivered a few days earlier than advertised, which was a nice surprise.