This extension will add an extra fieldset to the checkout page, allowing the user to switch to a different variable price without leaving the checkout page. Price switcher can be enabled per product.
The extension includes a “Force single variable price” option which will only allow 1 pricing option per product to be bought.
Also includes a “Disable cart on checkout page” option that will disable the cart on the checkout page. This feature can be used in combination with the pricing switcher to simplify the checkout process.