Unlike cars, good plates tend to appreciate, so it is worth spending money on one if you like it. I'm not a big fan of plates which you have to display incorrectly to make work though. I'm sure that plate will sell mind you. Good luck with it.
Was gonna say, its about spending money wisely. Buy a 180 for 2k and in 2 yrs time watch it go for 1k. This plate cost ?110 a few years nack and ive already been offered ?1200 by one company who buys them outright, and a value of ?1800 put on it by a company who advertises them for free then takes 5% commission. So yeah, its an investment. Think about how many yuppys in their 458s would love to have pass u on their car, or pimps/ strip club ownes who'd want pussy .