If I were you I would've taken that offer. Tesla Canada sells the Aero rims alone for $275 each, so that's $1,100 + 13% ON tax is $1,243. Tesla also sells the TPMS for $380 ($95 each), $429.40 after tax. Rims + TPMS = $1,672.40. Tesla sells the all-season set for $2,700. Very rarely does anyone sell the aero rims, your best bet is to buy them directly from Tesla.
So $1,300 for the aero rims, tires and TPMS is a steal, you really missed out.