1980 ET340 Rear Shock cheapest replacemnet

Hi I'm working on a friends 1980 ET340 and have to replace the rear gas shock and looking for the cheapest replacement. Wanted to see if you guys know some part numbers or brand of shocks I could use. OEM number is 8E7-47480-00 8E7-47480-01

odds are kimpex will be the cheapest. that is what i have on the 78 et340 at home.

yes kimpex is cheapest and maybe the only one you can find. they work well for a couple rides then feel like most of the dampening fades away. cheap. I had this happen with two that I bought for my 340's so far.
found them on ebay.