Honestly if you don't have a connection with someone who has a duplicator, you're probably better off just buying one yourself. You can get a 1 to 1 for like $150 and a 1 to 3 for around $200 and that way you'll be able to duplicate whenever you need it. The prices those duplicating places charge are insane. $10 a DVD? Thats fucked up. As for the artwork you can get a printer that'll do it. I haven't really explored much into it since I was lucky enough to have a printer that already does it.
$215 - and it'll probably last you forever.
$80 - my canon can print on dvds and they look professionally done.
hope this helps!