Yes I believe it is true and if I was in retail I would immediately add an on-line shop. If you want to open a web shop then you can look at www.prestashop.com or bigCommerce, both are good web shops. If you are going to have a lot of items, of which the prices are going to change often then your next challenge will be to find an accounting program that integrates with your web shop (handling images, prices etc.). There will be a lot of other challenges like - finding wholesalers - delivering your product etc.