From: Kia Carlberg
What is the difference in pating tier fees to Linden or to any other third party?
No, there's no difference, other than you actually have to manually pay an estate, vs LL simply charging your card on file. Sometimes there's a difference in the price, but it varies from estate to estate. It may be cheaper to go with an estate, but you have the tradeoff's discussed below.
From: Kia Carlberg
How come some sell land and promise me I don`t need to have a premium account?
That's because you don't have to be premium to "own" estate land. Only mainland owners need to be premium.
From: Kia Carlberg
If I put down some money into buying a land I am not all too interested in having all these restrictions placed on me in how I want to use it. Be it terraforming, setting up a small shop etc. but most sellers seem to have such a long list of "do not`s" - where can I find what I am looking for ?
The mainland. There are no restrictions on mainland except PG must maintain PG ratings on all items/actions on PG land. This has a double-edged knife type of issue with it: You can build all you want (within prim limits) in any way shape or form. But so can your neighbors, which may or may not be aesthetically pleasing to you.
From: Kia Carlberg
I also want to be able to resell it if I change my mind and want to move elsewhere, is there a huge difference in owning land on an siland and on the mainland?
Estate land in some cases requires the estate's owner's consent to sell. Mainland: no restrictions.
In the end, either you find a covenant you can live with and go there, or you buy mainland. In either case, visit as many places as possible to find what you are looking for. Visit places you may not be interested in, just to see the difference; it may end up being exactly perfectly wonderfully beautifully *IT* for you, or it may just be the absolutely worst thing you can imagine. Get a feel for the places (i.e. neighbors, lag factors, visitors, etc) by checking back often.
My current spot, I talked to four or five neighbors before I actually bought the land. And I visited several times at different times of the day to gauge the lag. And it's perfect, for me.
I hope you find the same for yourself.
Good luck!
A