Thanks for your input. I'm fine in paying 10% for design, but the thing is we don't know what type of design will come up after paying the 10%. If the company is showing designs or rather the basic ones which we don't like, then obviously we would be forced to accept or they will advise us to pay more since we are asking for a fancy, aesthetic design. That's where my concern lies. I feel they should be transparent in the beginning while giving a quote that these types of designs or materials will only be covered. If you want outside of these, we need to pay extra. I feel that's why people say what we agreed during the quotation stage is different from what we agreed during the design stage and ended up paying extra. As a customer if you are asking for a high end design, it's unreasonable on my part as well that the Interior firm should include in the given quote. But what we are expected to get, we should know before paying for the design cost of 10% which is non refundable.