i don't know what it cost the dealer to stock the items... a wild guess, here:
the 700 lss to me was $630. i'd imagine dealer price on it to be around $575.
the hornadys to me were $11/100 (*5 boxes), and would guess dealer price at around $10/100.
noslers, i really don't recall, i believe they were $24.50/250, so i'd guess dealer price to be about $21.
powders $19/pound, and i would guess dealer price to be about $15/pound.
talleys were were $43/each, and i'd imagine dealer price was $41/ea, but am clueless there, because talley sells direct, if you want (outstanding people, btw).
rifle basix lv-1 was $100, dealer is what? $90?? no idea.
as you might imagine, i keep no receipts. i don't keep receipts for the same reason i don't count my guns/scopes, and start the numbering at an odd number on the excel files (which i don't know what the start # is): i don't want to actually know, and i'd rather my wife not know every gritty detail. she knows, and she knows enough, but she doesn't need to know all.
all that was brought on by the $10 x-fer fee. anyway, not a retailer, so no, i really don't know what he paid for his inventory, and don't know what the acceptable mark-up was.
hell w/ it... doesn't matter. the market will eventually correct deficiencies, regardless of who it is, either by running one out of business, or forcing the other to change prices.
as far as the paperwork, no, i don't know what really goes into it - though i have a rudimentary understanding... but, i do pay $10 to x-fer, and i see others claiming anywhere from $5 on up to 50 or more (non-nfa). so, if some are doing it for $5-10, maybe they are making up for it w/ inventory sales, if $5-10 is a losing proposition.
edit: my mistake... the lss came from cabela's, not the 10-dollar dealer... hell, now i'm all flustered... and, to answer your question, no i don't know if i am the exception or the norm... i see people spending a lot more than i, and see folks looking for the $50 mauser special, and nothing more... dunno. not in the business, just a gun-junkie that gets off on burning powder and feeling a little kick...