Wedding party attire - durham region, on

We are hosting an evening wedding and to the best of our ability weare trying to keep our costs down for our large wedding party. My girls are wearing knee length, black dresses of their choice. Something they feel good in and will wear again. The bouquets will tie everyone together As for the men, a lot of the guys have light grey suits already from a friends wedding earlier this year. I was wondering if anyone could provide an alternative to fancy suit stores for them to get matching vests and ties from? $80 for a vest and $60 for a tie is crazy. We are in Durham Region, Ontario. Thanks in advance, I look forward to reading over your responses!