Q1) Can we have both products on store i.e normal add to cart products and some products that can have quote request button?
Yes. Definitely. You can. This is a dual cart. So you can have both buttons show up together. Quote buttons would only come on products on which you enable the field in admin side.

So your normal add to cart functions would run as it is.
And request quote buttons would be added to selected products in admin.
Q2) Is it possible to hide enable add to cart?
1) When you mark the product to be just quote. Then add to cart is hidden and add to quote is enabled.
2) Yes only if you mark product for quote, It would show this buttons.

You can do it per product manually or in bulk via module settings page.
Q3) Can we have just quote button on products?
Yes, you can have just quote button on the products you select on the admin side.

So for this products, a customer can only request a quote.
Q4) Is it possible to enable / disable price for only quote products?
There is an option available in admin to enable/disable prices.
So its choice of store admin to show prices for just quote products.
Q5) Can we show price for quote products only to customers?
Yes, you can enable the field "Show regular price before quotation".
With this customer will be able to see the normal price of the product while making the quotation.
Q6) I have a custom theme, will it work?
There are thousands of theme on opencart and each theme is coded differently. And our extension works on add to cart button.

We provide paid/free configuration depending on the theme.
Max charges are $20 for any theme or it's free depending on theme complexity.

So contact us prior to purchase on support@cartbinder.com
Q7) Is a customer required to enter address information or can that be optional for just receiving a quotation?
We have added a control for this. If you have enabled quick checkout then Address won't be asked. If no, then just personal details would be needed.
Q8) Is there a quote PDF sent for download?
We have quote PDF sent as an attachment to email when admin submits back the quote to the customer.

This PDF can also be seen in My Account -> Quotation History section.
Q9) What is separate quotation cart?
With our extension, you get 2 types of cart i.e normal cart and quotation cart.
So if separate quotation cart is enabled, the customer can quickly and easily request a quote through our simple 2 step checkout.
Q10) Can I use this just in the admin? I only need this for telephone quotes, and the quotation sent to the customer with a complete order link?
Yes, quotes can be created directly from admin side as well.
And it can be submitted to the customer with a link to which payment will be done.
Q11) Does the quote system support options?
Yes, definitely. The customer can select the options for products and request the quote.
Q12) If the customer can pay using payments like paypal, sagepay etc when they accept the quote?
Yes, the customer can pay with the payment method(s) you use on your website.
So if you are using PayPal, Sagepay then it would be shown to customers when they are paying for the quote.
Q13) We use special pricing based on the customer group. Will that be affected by this extension??
No. Our extension won't affect the special pricing. It will continue to work as it is.
Q14) By default in opencart we can hide the price for non-registered user and allow only registered user to see the product pricing. is this default feature still can be use? ?
It will be the same. Pricing will only be shown to the registered users as per your settings.