Luke11CNC Build Log ,I'm so naïve

[Jonathan]

it may be a tad more then china, but the pros are :It WILL be straight, it Will be quick and if you have an issue you can return it quickly.

It's quite a lot more expensive than China, but up to you I guess...
If you order the ballscrews and rails together you wont have any problem with them being straight as the rails are strong and they will protect the screws as it's all packed together. I didn't have a problem with any of the parts I bought not being straight... even the 2100mm ballscrews were fine and they came on their own.

He's generally pretty quick ... despatch in a couple of days and the shipping takes 2 or 3 days.

I got, for £280, two RM2510-2094mm and one RM1610-905mm ballscrew for £280, that's with different end machining too. From Zapp the same would be £478!! Without end machining it's about the same price ... but assuming you've not got a lathe you need that, though I would do it myself.