A client that sells windows online requires a custom OpenCart extension that will, essentially, allow the visitor to enter the size of window they require (i.e. 650mm x 725mm), round it up to the highest, nearest 100mm (so that would become 700mm x 800mm) and quote based on a pricing matrix that the user can change.
The pricing matrix changes for each window but an example would look something like this:
HEIGHT 100mm 200mm 300mm 400mm 500mm
100mm £10 £20 £30 £40 £50
200mm £20 £30 £40 £50 £60
300mm £30 £40 £50 £60 £70 etc...
It must be easy for the client to alter pricing in the matrix and, to the site visitor, they should simply be able to enter a HEIGHT and WIDTH number and get it to calculate automatically.
12 freelancers are bidding on average £203 for this job
I have more than 8 years of experience in PHP and open source, also have experience of handling complex project and I'm very much confident that I will able to manage this project. Please give chance to prove myself.
I am experienced open cart designer & developer for this job. Please share more details of this project. You will find some good reviews about my work here with a 100% completion rate.