[Reatclaplen]

depends on what your website is like, do you have any special requirements or is it just your usual commerce site?
for your average commerce site the mainenance costs sound high, what maintenence do you think you would require once website is up and running, if its adding removing products you should really have a system where you can do that yourself

make sure you check out peoples portfolios before going with them, some of the costs are very high but visually the websites are not appealing and don't look professional...for an ecommerce website the look is more important because if it looks shoddy but works great customers will be turned off and go elsewhere because people see shoddy design as an unreliable business