I’d have thought the value of Ti would be quite good when weighed in – worth a call to your local scrappy to ask the £ per Kg.
The only problem there is that one would imagine the frames don’t weigh a lot. Although the £ per Kg may be quite favourable, there won’t be a lot of Kg!
Personally, I’d seek advice from a Ti frame builder on having some form of reparatory gussets welded over the damaged areas (‘elastoplast!’). I can think of at least one such person who regularly posts on here, although uttering his name would doubtlessly give rise to howls of derision and accusations of sycophancy from certain quarters. (Sod it, ask Brant!)
Failing that, as b r says, I’d eBay or classified them, clearly stating the damage and disclaiming any responsibility if the new owners elect to risk riding them unrepaired.