It depends what I paid. If I paid $50 for a multi-disc, 45 rpm pressing and it's got any repeated pop or imperfection more than a pop or two, I'll send it back. If the level of the pops a low, I'd put up with several, but if there are one or two load pops or major cruve imperfections or out of center or warping, I'll send it back.
OTOH, if it's a new popular music release that I paid say 16-bucks for, then I'll expect a few pops and less than pristine surfaces, but won't keep it if it's warped significantly.
I must say that I've had very few bad experiences lately.
Dave