Took a better look today. The other day I just viewed it on my phone.
It does look different than the L-075/L-124 in the views you posted.
Your fish looks shorter and stockier but it could be the angle.
Can you get a clear shot from the side?
I did get in a Peckoltia sp several years ago that could be this same fish....we never determined what they actually were and they were sold as "Peckoltia sp. Red".
Many different plecos get shipped from South America as a certain fish but each time they turn out to be slightly different fish.
BTW, no you didn't get screwed. If it's an L-075 or L-124 that's not a bad price. If it's that undescribed red Peckoltia, you're good there too.