From the OPs location he's in Canada and the Kubota,com site's part list from your link will only work from a US IP address. The problem we have in the Great White North is some Internet site either won't work for a foreign user, vendors won't deliver outside of the US or the shipping, customs duties, broker fees far exceed the actual cost and/or the exchange rates makes the part un-affordable. I tried buying a USD55 tool from the US this year but the vendor wanted to charge me USD50 in shipping.
Before dumping on a user remember some of us have an international border to contend with.