If you intent to give him a really good surprise Xmas gift, then use the $400 to book him a good model ($400 should be able to get a NUDE model) .... this is the ultimate surprise gift most hobbists here would dream to get from their other half ....:think: ..... now the problem is how much you willing to pay for the hotel room? .....
or like many here, $400 can give him almost about 6 weekend shooting with some organisers here, including bikini ones, ... and I am sure babyfairy/predator/producer can give you some discounts too.