Motorists are being encouraged to dob in service stations suspected of price gouging as almost 100 locations are fined in a state-wide blitz.NSW Fair Trading officers inspected nearly 1800, about 75 per cent, of the state's 2400 service stations in the past fortnight.During the operation, 93 fines were issued, 24 of which were from public tip-offs alone.READ MORE: Clock ticks on Trump's 48-hour deadline as US and Iran race to find missing pilotNSW Fair Trading officers inspect service stations across