I have two twin box springs that won't work with the bed frames we got for the girls. One was just bought in July. The other is about 2 years old. Excellent condition. If you're in the Raleigh area, let me know if you interested in them before I put on Craig's List.
If you end up putting them on craigslist, good luck to you. I posted 2 last week that have been in our house for only 3 weeks and got no bites. Going to try again soon though. We bought our bed then our platform to find out the box springs made the bed WAY too high (and the store won't take them back).
Re: Twin box springs