Yeah...
That'll happen...
FWIW, I'm at 15 titles. All UHDs for $10 or less except one splurge of the Citizen Kane Criterion UHD set. Possibly going to 16 if I break down on the Ran Steelbook. I suspect I'm done, because mostly the same titles keep going on sale again.
I've already gotten at least a dozen. It's difficult to resist a 4K disc with a code for $10. The quick grab was Zack Snyder's Justice League, which was gone fast. I already watched that, and really enjoyed it.