Convention Help

[u/Depaul007ks]

Hello. Recently re-entered the hobby after many years and am attending my first convention in a long time. Can anyone give me advice about how pricing and putting bundles together works nowadays? Or how dealers react to negotiations? Thanks. I'm not looking for super discounts or anything. More just if I pick out 3 or 5 graded slabs if it's ok to ask for like 50 bucks off 1000. I'm not buying to turn around and sell my wife and I just rediscovered our love and fun with collecting.