OT: Going rate for LAMP jobs

[Geoff Shang]

Hi,

I've been offered work on a (presumably) one-off project, writing some PHP 
code to collect data from devices out in the field and store it in a MySQL 
database, to provide information/updates (as yet not fully specified) back 
to these devices, and web pages to allow users to track the information 
sent in by the devices.

Sounds reasonably straight-forward enough, though I've not yet asked for 
the specifics.

My question is, what is the going rate for work like this?  The person 
asking is in the US but obviously they're happy to go off-shore for this 
so it's not just the US I need to worry about.  I'm of course prepared to 
be flexible but I don't want to under-sell myself if I decide to take it, 
and there are other reasons why I may not.

Thanks,
Geoff.