Death world forest and resale value

I went a bit crazy buying up the death world forest terrain. I know see that it has gone way up in price. I do not intend on selling what I have and want to customize some of the trees but I am hesitant. Should I just leave them the way they are suppose to be or just go ahead and build the last three I have as a custom piece? How mich value will they hold over time?

I have personally never sold any of my 40k stuff (currently occupies half of my guest room). You would be surprised how often you go back and make use of stuff that is covered in dust.

Cant comment on how it holds monitary value, but its nice to always have conversion-fodder arround. Never know when you need a random part for your custom Grotesques/Talos/etc

Yea Its looking way to good wiyh the Front line gamming matt I got lol. Im going to customize the last ones I have. Now if I could fine a shardwick spines box at a good price I would be finnished with mt dark eldar occupied death world.