Factor in the increased first cost and the increased replacement cost, divide by your energy savings, and figure out your payback period for the "cheaper" bulbs.
Will you still be alive, or long dead, by the time your energy savings offsets your increased first cost?
Cost was $28 for the bulbs from Costco. Paid for itself in 1 month. Not counting the fact I’ll have to buy 5x as fewer CFLs as a normal bulb.