this thread can allrdy help a bit with showing some items in the 250a-1000a range 
this thread can allrdy help a bit with showing some items in the 250a-1000a range
True! But I'm ignorant when it comes to items outside of minis. Are there any weapons, shields or other types of items?
there are no "stable"-priced weapons in the 250-1000a range
stable maybe a HoD sword is in the ~100-150a range
everything above is minis mostly and ultra rare tonics, as it allways has been afaik.
highend like high highend trades. happend with rare mini1+ rare mini 2 + rare mini3 for Ultra rare miniX ( panda+Ig + MkG = kanaxai )*
*just example to show may not add up to value
I know I'm not answering the question, but rather maybe addressing the problem that raises the question...
...use a trade mod?
this is either obvious or irrelevant. you decide based on your specific circumstances.
250a is the most stable thing worth 250a you gona get. The reason minis ended up being used when 1750 became not enough is they are essentially as fungible as currency and more frequently traded than any specific high end weapon. As Clean says there is no consistent pricing of such high end items and even identical mods/mod order and reqs sold in the same time period could have big difference in price due to a more or less desired gold value (As Mr Clean knows all to well 
). The HoD sword is somewhat of an exception but its not helpful in 1750+ trades when the common price is much less than 250a.
Kabong nicely points out the only real alternative to the age old "rare mini1+ rare mini 2 + rare mini3 for Ultra rare miniX" that I'm sure you are familiar with.
