New car Insurance

I just bought an aditional car, when I reported to insurace company. They charged seperately. The email is as follows


Ok...we have everything ready to go and all we need now is payment! The
six month premium for the 2007 Honda is $ 426.51 and we can take that
amount today with a Visa or MasterCard if you prefer. All we need is
the credit card number, expiration and billing zip code.

Also the 2005 Accord will go down about $75 every 6 month term for
adding multi car discount on now!!!


Is it reasonable/

Thanks in advance.