My napkin math is your valuation is usually 5 x raise amount and 10x annual revenue.

So valuation is 5*60m = 300m And expected annual revenue is 30m.

At 40/month they are expecting roughly 1M monthly actives. So I am guessing their pitch is with the vc money they will get to this number and beyond before the next funding round.

Reality is more like the founders got to cash "something" for their troubles and ability to sell the dream to others. Who knows may be they will hit it out of the park before the next round.