Best Value for SR20 Size Guide Rail

Im looking for some SR20 Sizes Rail and blocks
can anyone recommend a good value / source

Looking for 2 rails that are 19" long and one rail that is 29" long
+ 3 blocks

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Makerparts.ca
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Does it have to be SR20? I buy used linear guides on ebay, and occasionally find a deal on unused ones for the same sort of prices (<$50 each, shipped). I don't care too much about the size of the rail because 3D printing is very close to zero load for these things. I start searching by price then check lengths and number of blocks. There is a guy in S Korea who sells a lot of inexpensive, used linear guides on ebay, and another in Canada.

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]

I would like his name dentist if you can . the one from S. Korea

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Delta Printer
Duet 0.8.5 firmware 1.19

I bought from this guy: [www.ebay.com]

This Canadian guy has a ton of stuff, but I haven't dealt with him: [www.ebay.com]

Here's another one in the US that I purchased from who often has good deals: [www.ebay.com]

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Ultra MegaMax Dominator 3D printer: [drmrehorst.blogspot.com]