I just was looking for the marketplace and cannot find it using the link OllyW posted.
This is because a member does not obtain access to the marketplace until
two separate requirements have been met.
The first of these is that one needs to have been a member of the forum for 180 days (roughly six months), and the second is that one must have made (at least) 250 posts in the forum since one joined the forum.
Both of these requirements must be met before one is granted access to the marketplace; in your case, you have easily met the time criterion, as you joined the forum a decade ago, nine years longer than the six month requirement for marketplace membership.
However, from what I can see, your post count is still under 250 posts, and you need to make more posts in order to be granted access to the marketplace section of the forum.