The basic price of any Toshi Strap includes a free complimentary spring bar buckle.
When you place your order you will be asked to select the buckle you want with your strap. If you select any “spring bar” buckle you will not be charged any more than the base price for that specific leather, but you do have the option to upgrade to a more expensive buckle if you wish to i.e. either for a screw bar or sewn in buckle.
The buckles available to you will be determined by the strap width you have selected. The buckles page has information on which buckles are available, and in what finishes & widths.