Shopping is boring.*
I was in a convention game once where we spent the first two hours getting ready for the expedition -- shopping around, haggling, looking for bargains. Two or three players were really into it, as was the GM. The rest of us (four or five of us) were twiddling our thumbs and would just chime in occasionally "I get that, too".
I almost walked away from the table.
Once we really started playing, it was an amazing game -- but we had to rush/narrate the end of the game because we ran out of time (in a ten hour slot!).
It comes down to "where do you want to spend your time?" -- I'd have much rather played out the ending to an awesome adventure, than have spent the time with mundanity. I suspect that, for one thing, folks that find shopping and selling more consistently interesting, are folks that have more time for gaming and do a lot of it. If I only have 10-12 hours a month (if I'm lucky) for gaming, I don't really want to do stuff that I need to do in real life that I find boring in real life.
* Sure, you can spruce it up once in awhile and make it relevant, but I have yet to spend any money on seeing a two-hour movie about haggling. What I can recollect from print fiction is generally a line or two summarizing such things. In the movies, Luke Skywalker didn't get as much for his landspeeder as he had hoped, but we didn't meet the used car salesman he was dealing with... Maybe that'll be in the next 'improved' version...
Gnome Boy (a.k.a. "Jon") • DCC play-tester @ DDC 35, Feb 2011. • Beta DL 2111, 7:00 AM PT, 8 June 11.Playing RPGs since 1977
• Quasi-occasional member of the Legion of 8th-Level Fighters.—Here Be DCC Monsters—VOORAK, L, Hunter, S10, A12, Sm10, P6, I13, L15, AC 10, HP 3, Spear +0 1d8, Init 0; R 0, F 0, W -1, Holy water, Pelt, 3 iron spikes, 1d ration, 4-leaf clover (Find secret doors) (+1), Com +1
SARKLA, C, Gatherer, S9, A14, Sm14, P15, I14, L8, AC 11, HP 5, Knife +0 1d4, Init 1, R 1, F 1, W 1, Chest, Basket of veggies, 2d ration, lg sack, waterskin, torch, Seventh son (Spell checks), Com +1
TARR, C, Hunter, S14, A11, Sm15, P13, I8, L8, AC 10, HP 3, Spear +1 1d8+1, Init 0, R 0, F 1, W 1, Holy water, Pelt, 4 torch, flint/steel, 1d ration, sm sack, Fox's cunning (traps), Com
TELVA, N, Herbalist, S13, A6, Sm9, P6, I12, L10, AC 9, HP 2, Club +1 1d4+1, Init -1, R -1, F 0, W -1, Chain 10', Herbs- 1 lb., 50' rope, 2d ration, torch, Speed of cobra (Init), Com