Bitpay is remarkably cheap for any small to mid-sized business. You may consider checking them out. As a customer, Bitpay invoices generally work very, very smoothly.
Coinbase offers this service. Sign-up as a merchant and you can add a pay with bitcoin button to your website. They cover the rest.
Real simple and, I think, free.
Thanks for these, CEG5952 and JohnFromWIT. I'll be checking them out when I get up in the morning.
This (and the previous response I replied to before) are exactly the type of answers I was hoping for - gives me a good starting point to work from.
I'd seen so much when searching around earlier - bit overwhelmed really and not knowing what the respected names were and what might be suspect - it's still like a new world to me.