Buyer's perspective: drop your price. $2400 for a modified Marshall and a couple of kinda beat up cabinets is too high. You may get offended and think it is worth every penny of $2400, but the fact that you haven't moved it should probably start to get you wondering about your pricing. If it weren't modified and if the cabs were in better condition, then maybe. But for $2400, most people can at least get something brand new, which really is your main obstacle at this point.