Hi,
I have worked on many arduino, but not from this site...
I do have an Arduino Mega, but can just compile for errors and give it to you... Most of the testing can be done at your end with your help...
If all the 5 Sketchs works according to your requirement, then combining them will not take more 3 days...
The bid amount is high because freelancer charges lot commission...
My Daily rate is £75 GBP (125 USD) per day...
Please share your skype ID, if you are further interested... Thank you
Regards,
Vikas