To answer your question no the items bought from NPC Walter Jaeger that you get when you exchange Hunting Points cannot be transferred or sold to other players.
References:
If you talk with the NPC it goes to your store box and you cant trade anything in your store box!
16:08 Walter Jaeger: Good hunting! I can offer you some lovely rewards for finishing prey hunting tasks! Furthermore I can tell you how many hunting task points (HTP) you actually have and you have already spent.
16:08 Liviuh [119]: rewards
16:08 Walter Jaeger: Finishing prey hunting tasks will give you hunting task points (HTP). These can be exchanged for items of the following categories: outfit, mount, trophies and furniture. ...
16:08 Walter Jaeger: Please note, that all items will be put into your Store inbox!
16:08 Aruda: I would never have guessed that.
According to the thread on the Auditorium titled, News: Hunting Tasks and Configurable Control Buttons here:
https://www.tibia.com/forum/?action=thread&threadid=4749965&pagenumber=1
> 3- Will it be account wise, like the tournament
> cosmetic stuff? And also, when are you guys going to
> make us another tournament? Its getting annoying to
> wait this long.
The rewards are per character.