Feasibility study is addressed to customers who are not decided to have a full HTA report prepared. The doubts are often caused by uncertainty as to the availability of scientific evidence and the importance they represent to the Polish decision maker. Feasibility study, as a result of a review of medical databases, determines the chances to prepare a credible HTA report basing on the available scientific evidence. If the evidence is sufficient, the customer may decide on preparation of the full HTA report, while its cost will be lower as it takes into account the expenses already incurred. It gives our customers a sense of comfort and financial security, as it is not necessary to incur the cost of a full report preparation, without prior insight into the chances of successful reimbursement process. Such knowledge often becomes invaluable, when the Polish decision-maker tendency to reimburse new drugs is still difficult to determine.