A new ecommerce website

I have a website selling wall art which I built in dreamweaver but Id like it redoing with a good ecommerce software with paypal pro payments. (Possibly Prestashop or Magento)

There is an existing php page on the site with a made to measure caclulation on, this needs to be slotted in as it is on the new site.

Some products need a text area for personalisation details to be sent.

I need a price for setting this up in a nice template so I can add products. There will be around 5 categories, each with a further 10 categories to set up.