I'm regularly throwing away gold or LPs to get other stuff than I had because I'm sick of waiting.
I was with 15 MW's a few months ago, now I'm with 13 and I'm fine with that. I however also didn't make 45 retirements but only 32, so I also shouldn't have 15 MW's but only 10 + 2 LPs. I don't see anything wrong with the marketplace. It allows you to get certain stuff faster and it also allows you to get rid of your junk that you don't need anymore.
And any comparison to real life is a fail. Ofc it is fine to scam others in Real Life. Such a scam irl can result in a punishment. In crpg you can contact an admin now if a trade wasn't justified such as paying 40k for 1 LP only instead of 400k. But adding 20k to a trade is fine, as both players agree to it.
Such a change you're suggesting, BlueKnight, would mean the end to a lot of comfort of playing crpg. No thanks, crpg without the marketplace would simply suck. Without the marketplace as it is now.