Not trying to be negative, just pragmatic. I'm certified in CPR, First Aid and using an AED. I carried a huge first aid kit for years so I care about first aid. But, stretchers don't have to be that expensive. Most are just a piece of 3/4" marine plywood (no voids) with slots routed in them. You could do this for under $75 bucks, table legs included. And, it won't heat up in the sun like aluminum and burn your arms, or the back of the victim. Besides, how many times have we really had to use a backboard. And if we did, once back at the vehicle, we'd still have to bend the victim onto the seat since our 'expeditions' are not within reach of most ambulances. Yes, it's possible that you'd try to strap a full length stretcher in a vehicle for the ride to safety, but many of our rigs can't accomodate this anyway. My Jeep is one example. Even though it's a 4 door, I'd still have to rope the tailgate open with the victim sticking out unprotected. The victim would also get a good dose of exhaust during the trip. I know there's a place to spend a dollar where a dime will do (airlines pay $4,000 for a coffee maker). But, camping is not the place (ok, winches and tow hooks may be two examples).
I do like the dual-use idea. However, it's just a rip off waiting to happen. Better idea: Rig a regular table as a backboard if necessary with rachet straps. Improvising is the key in first aid, not being a fully functional hospital. If you're that worried about a first aid, build a complete dufflebag first aid kit and include a bedsheet (many uses), femanine nampkins (absorbant), tons of 4x4s and a battery powered AED.
My final answer: That company's charging a 600% profit and we don't really need that.
I'm loving this site. I'm excited about getting back into the kind of adventures this site is all about. Thanks.