They already do an exciting, real bi-double service for $280 half hour or $360 hour. Or regular double service for $220 hour or $300 hour. The difference is with bi-double they have sex with each other as well as with you. Double they both have sex with you but not each other.
The NEW special is for $300 you get an inclusive 20mins full bi-double including extras. What are those extras? Go see them in person to find out.