Looking at radiators on ebay, anyone use them?

My local O'Reilly wants $175 plus tax for a replacement radiator. Found these two on ebay that look just like the stock item, even have the fan mounts and such, but the price seems too good to be true. They appear to be a quality product but I wanted to see if you guys have any input regarding them.

NEW DIRECT FIT COMPLETE ALUMINUM RADIATOR - 100% LEAK TESTED RAD FOR 4.3L-5.7L (Fits: Buick Roadmaster)
$75 with free shipping


BRAND NEW RADIATOR #1 QUALITY & SERVICE, PLEASE COMPARE OUR RATINGS | 4.3 5.7 V8 (Fits: Buick Roadmaster)
$75 with free shipping
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Never used those but have learned the importance of buying a good quality one. I cheaped out a month ago on my Caprice with an aftermarket one which seemed well made. Last weekend The drain plug and whatever it attaches too blew out in a drive through resulting in a tow home. It's delco from now on for me!

I bought one at RockAuto for $116 last week, but it required oil cooler adaptors for the lines, and once installed, the lower line would not clear the frame rail. Fail.

I sent Rock Auto pics and they did not offer to send me another model, they just sent me a call tag for Fed Ex to return it. Fail again.

Went to O'Reilly and sucked it up...same deal, $175, but everything connects like factory. Done.

-Mike

Oh just an FYI if you do not have the engine oil cooler option, everything else on the Rock Auto one did fit fine.