I see it, guy is an Elite rank player just turned so my guess is he won this freebet from his rank up prize.
Nope as it has been pointed out, only things purchased from marketplace could be listed there so he bought it from the house on 2% discount then listed it there for 8% discount. Pretty weird if you ask me
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Yes, it probably has something to do with deposits. -snip
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but somehow it have some logic, since for sure they dont want to have people collecting it like crazy and after a few months entering a single deposit and withdrawing without playing at all and taking home all the rewards.
This actually makes sense.

This was on 1st September and before that I cleared out my boxes on 18th May so thats just like 3 months for $30+. It just make sense now that they probably stop gifting those boxes if people stop depositing regularly onto the site.
Imagine collecting only daily boxes and deposit $10 every 3 months to get $30+, JP would lose money on this
I cant really remember but I think they give other boxes as well aside from just daily login. I used to get alot more than just the daily 2 boxes