No I don't. I don't out source or rely on independent business from india, china, etc, to achive project requests for my clients. All of my design and development services is done by me personally, and is done locally in downtown Oshawa, Canada....
In any business, competition is fierce. If you have a responsive website, you'll be equipped to compete with the giants of your business while leaving behind those who haven't realize the importance of this technique yet. Especially now, when the big players regarding search engines policies clearly states they will only rank and position 100% responsive websites.
Before the concept of RWD, we used to make different website for each devices like smartphone, tablet, kindle etc. Responsive website looks great of the desktop screen but the same may not be true when your site is viewed on a smartphone, a tablet or an e-reader (like the Kindle). Once you make the design responsive, the website will look good (and readable) on all screens and not just the desktop.
The time it takes to produce a website depends on the size and complexity of your site. A basic website typically takes around 2 to 4 weeks from beginning to end.
This is a hard question to answer as each client has different requirements that need to be met. This means that services are typically customised to those custom requirements and not applicable to a 'one price fits all' costing system. However, the price of an adaptive website tends to be only slightly greater than the price of a traditional website.
Yes, I can either design a digital online store or standard e-commerce shop online, which will include tax/vat, shipping, etc, and will support most third part payment processors, such as Paypal, direct banking, etc.