i think its safe to assume they are, however the timer we just dont know. (probably not too excessive tho) i learned my lesson with the ararat stuff. paid like 200m for the satue lol. But was worth the risk i felt at the time, no arty tag, didnt know if they respawned, or if they were like ruined painting and only spawn like once a year per shard.
http://stratics.com/threads/get-rea...s-these-are-brand-new-and-sweet.305001/page-3
and that statue is still a focal point of one of my house designs, id say it was still "worth it" just to be one of the first to own them, even tho very common now. The new stealables look great, ill probably wait till cost comes down (which will be slower now that there shard bound) but also dont blame those paying a premium to have them right away. all part of the new expansion buzz i guess.
but i think we all know now this new style of stealable. anyway brought up some some fond memories.