Communication system, non-transitory computer-readable recording medium storing computer-readable instructions for terminal device, and method performed by terminal device

A communication system comprising:

• a terminal device;
• and
• a server,
• wherein the terminal device comprises:
• a memory;
• and
• a controller configured to:
• obtain specific information stored in the memory, wherein the specific information includes at least one of region information indicating a region where the terminal device is used and model information of a printing device used by the terminal device, the printing device being configured to execute printing by using a plurality of cartridges corresponding to a plurality of colors;
• determine whether a predetermined condition is satisfied or not by using the specific information;
• in a case where it is determined that the condition is satisfied, send a first page request and color information to the server, the color information indicating a selected color selected from the plurality of colors;
• and
• in a case where it is determined that the condition is not satisfied, send a second page request to the server without sending the color information indicating the selected color to the server, and
• the server comprises a controller configured to:
• in a case where the color information and the first page request are received from the terminal device, send first web page data representing a first web page to the terminal device, wherein the first web page includes information for purchasing a cartridge corresponding to the selected color among the plurality of colors indicated by the color information, and does not include information for purchasing a cartridge corresponding to a color among the plurality of colors which is different from the selected color;
• and
• in a case where the second page request is received from the terminal device without the color information being received from the terminal device, send second web page data representing a second web page to the terminal device, wherein the second web page includes, for each of the plurality of colors, information for purchasing a cartridge corresponding to the color.