The answer to this question depends upon the dealer. A reputable appraiser will not appraise a quilt that they are interested in purchasing, or have any vested interest in. This would be a conflict of interest. If a situation occurs where the appraiser or dealer is interested in purchasing your quilt, an ethical appraiser will refer you to a colleague for the appraisal. There is no licensing or certification required of appraisers at this time, and until there is legislation passed to protect the public from unqualified appraisers, it is up to you the consumer to decide whether the appraiser you choose is qualified.
Education covering appraisal standards, principles, procedures and ethics are of utmost importance.
An appraiser who has undergone comprehensive testing by a nationally recognized appraisal organization is a way to insure competence. Especially when dealing within a specific area, such as quilts, one would want to ascertain if the appraiser has quilts as an area of expertise.