Limit Inventory Available for a Specific Event

[kallenconsult]

When it's time to move some products, we like to have a sale.  Generally this happens because one of our products just hasn't been moving as we'd like -- so we want to have a sale but not sell out, just bring them down a bit.

So, what I would like see is a way to offer a limited quantities of SKUs for an event and when that's done, the sale is over.  I do NOT want to create different SKUs just for this purpose.

Any suggestions?  Any and all ideas will be welcome!  (Except ones that involve creating new SKUs.)

[kallenconsult]

A good example would be similar to a brick-and-mortar Black Friday sale, where they have a limited number of items for sale at the crazy sale price and when they're gone, the rest are at the normal price.