Hi there.... it sounds from your note as if you've had some trouble with bids, I am sorry about that. Sometimes it's hard to filter the bids...
I am afraid I am higher than your budget. My bid is for all three calculators to be designed and built to your specs and delivered within five days of beginning, using a similar bootstrap theme as to the one you provided, although I may not be able to get the numbers to roll and animate the way they have done. I will try to, but don't want to promise that yet. If you check my reviews, you'll see that I really will try I just don't like to promise something new to me.
Regarding calculators, I have built several, the most complex was in old-school javascript using google maps API that enabled a user to draw a sailing route on the map and calculate fuel costs and carbon emissions etc. It's a really nice little tool for a yacht charter company.
I hope you like my proposal and I will be happy to chat at any time about the project.
I have experience with HTML/CSS/Javascript/PHP/MySQL having worked for 11 years with a yacht charter company as their sole in-house developer up until May of this year when I started on Freelancer. For the yacht company I was asked to build every kind of tool imaginable, sales tools, finance reports, accounts tools, management reports, customer website with search tools, search results, automated PDF creation, real-time chat, etc,
Please send me a message if you like my proposal, even if I am offline.