I am starting an eCommerce marketplace. I am about to give the go ahead to my designer to start work- however I have already paid 2000$ for development. But, for the maintenance only he is charging me a 2,500 $( a yr) separately which includes - creating banners, backup of the website every 15 days,uploading photos/videos or logos given by us, bug fixing, providing traffic stats, and adding removing static pages, and security monitoring.
The problem is I am on a tight budget & considering the nature of the jobs - such as banners,uploading photos which I will want occasionally is it advisable to go with him or just hire some freelancers on elance and odesk ?
In short should I take maintenance from him or just hire freelancers to complete jobs whenever I need? what is better and cost effective ( 2500 for maintenance is too expensive for me )