On the 1894 the problem sounds like the stock.  I have seen people selling forestocks that you can add and make it appear to be a full-stock again.  The barrel should be 30", if shorter then it is either a carbine (lucky you) or a cut-down rifle which would diminish its value.  I think that unless it is a genuine carbine then $7XX is about $400 too much.

On the 1898 the stock is also a problem.  If it has the original front sight and the receiver has not been drilled and tapped for the rear sight then it might be worth in the $4-$500 range depending on bore condition.  You would still need a forestock (or complete stock) plus a rear sight to make it whole.  These parts could easily cost you upwards of $300.  If the receiver has been drilled and tapped for the sight, then value just plummeted to maybe $250. 

These are just ballpark numbers based on my limited knowledge.  As 98src said photos would help, but hard to take of someone else's rifles.

daveboy