Most of the in-production accessories won't likely fit/work with the older radios. Despite the initial cost, you'll likely save money over the years trying to refurb, find parts (or whatever murphy decides to throw at you.) That being said, I'd almost recommend getting a newer, in-production HF rig. How much to pay would depend on its condition. It has 250W out so it'd be a solid, first-time base station. I wouldn't pay for anything but the 940s - and that's presuming it's in good (or better) condition and fully working. If she is giving away the gear then fine - take it and proceed forward.
