Cheap Heater for "Snake Room"

[PsychoSnake]

I understand you generally get what you buy, but does anyone have any recommendations for a relatively cheap space heater to heat a snake room?

I'm planning on brumating my rosy boas this year (breeding!) so I plan to only have the house thermostat set to 55 F. However I don't want to brumate the other snakes. All the other snakes fortunately are residing in the "snake room" (my bedroom, but let's face it they use it more than I do). The room is 12 x 8 x 8 feet with only one wall being exterior. I would like to have a heater on a thermostat that can keep the snake room at least up to 75 F.

I hear a lot about oil filled radiators for such applications. Would that be efficient enough to do this job? Are there different types of heaters that will work as well? Any advice would be well appreciated.