Depends what you mean by cheap ? Can get a spinner for a tenner off eBay but if you want quality you need to use the Facebook groups and make sure you aren't buying fakes
This guy makes a great slider
https://www.etsy.com/uk/shop/Kladis3DStudio
These guys are excellent
https://www.kapedc.com/
Or use this FB page and get second hand
https://www.facebook.com/groups/TheD...ace/?ref=share
You will see Modus second hand sliders at $600+ and you can get exotic materials like zircuti and pay more
Personally just get a cheap spinner see if it's your thing then progress from there
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