It’s with an assumption that you are planning to obtain a master license fee based leisure booking engine. The question now then is “how much budget are you willing to allocate to obtain this engine?.” A booking engine master license fee can cost between USD 5,000 to USD 500,000 depending on your requirement features. The lower price-point has limited features and flexibility, while higher price-point has more of it – like everything else in life. You may download a courtesy example of booking engine matrix features as your reference data points on what to look for an engine. Also note that most booking engine does not come with a website or portal. It is the responsibility of the licensee to have a manage website to integrate the booking engine with it. Most of the time, a travel website especially a B2C website will cost more than the booking engine itself. Travel website or portal build, design, enhancement, maintenance, support and constant contents update for search engine marketing compliant is the biggest budget expense that any travel site operator should consider to have a successful online travel storefront. There are literally more than a hundred leisure travel booking engine providers in the world, so be prepared to invest enormous amount of time calling them (don't expect that they'll answer all your questions via emails) and schedule series of live demonstrations to evaluate the right booking engine for your requirements. Extensive and proper due diligence (they will also do the same with you via Q&A pre-qualification process - they can easily detect if you are a serious buyer or just on a fishing expedition) is necessary to find the right booking engine for your needs and believe it or not most booking engine out there simply don't work properly for many reasons, but the primary culprit of a flawed booking engine is too buggy at best because it was not properly tested and quality controlled prior to its release in the production environment. You also need to make sure that your booking engine vendor provides timely support and excellent client-services. If you don't spend enough time contacting their references, then you'll end up dealing with typical travel technology vendor who acts like a customer that takes days for them to return calls or answer emails, worse they'll fix a 5 minutes problem in weeks or even months. I won't name names, but there are too many of them in this industry and I personally would not do business with vendors like those - they could potentially ruin your business - that's a first hand experienced as I've paid my dues. The best sites to find contact information of travel technology providers are through SourceIT-Travel or OTID.