LB- this is the first time I ever heard about the number 98 being significant, and I have been frum for more than 4 decades.
Numbers can have symbolic meaning and significance, but halacha does not follow superstition. Don’t worry about buying something that ends in .98 or living on the 98th floor or having 98 people at a party or being friends with someone born in the 1980s or 1998.