I think that only you can answer that question for yourself. If it was me, I would feel ambivalent. I feel like a Q950 might be worth about $50 to me, if I did not already have some PM9150s. However, the NuBus cards could easily add another $50 or even $150 of value, or none at all. It's a gamble. A Q950 is the kind of machine that might have received some really sweet NuBus upgrades from its original owner. Or it might be full of whatever junk so subsequent owner had laying around.

Also, keep in mind that the Q950 uses 30 pin SIMMs. It has sockets for sixteen of them, but high capacity 30 pin memory is not so easy to find nor as cheap as, e.g., 72 pin SIMMs.

If you really mean, "Will I be able to get my $100 back out of this if I buy it?" The answer is probably 'no'. Shipping charges make it difficult to sell these beasts for substantial amounts, because the buyer knows he's also going to be paying ~$50 to ship the thing.

On the other hand, if the thing has four sets of 16MB SIMMs (256MB total) then that would be worth about $100 all by itself.