Well if you are planning to come over to England, forget it ;P
There are no pc engine games in the UK that has rare titles at a
price as low as in the US. Prices for almost ANY pc engine games vary
from 45 pounds up to 60 pounds for normal games. The biggest selection is
telegames here followed by places like console concepts and down in London
there is cex retro near Tottenham Court Road but their prices are also a
rip off. Super Raiden was at 60 pounds, Graduation was also at 60 pounds.
that's almost US$100 each!!!