I know about a $200 transaction about 30 months ago or so, FWIW. No idea today.
Shame to waste a modded unit for the $99 lifetime on a Bolt. I'd trade you a qualifying lifetimed HD (non-modded) model so you could get the $99 offer, but I think it would be difficult to arrange in time. I'm traveling right now and the offer ends soon and there are some pesky details: I'd probably actually have to buy the Bolt on my account then trade it to you for the modded HD & equivalent cash to make it a wash for us. Not enough time.
Maybe someone else here would be willing to make that trade with you if you decide you want a Bolt?