Swapping EDF tariffs

CIS

I currently have Gas and Elec with EDF on the standard rates with a dual fuel and DD discount.


Electricity is 19.23p for the first 210 units then 9.33p .
Last quarter I used 1265 units

Gas is 7.00p for the first 558 kwh then 3.056p .
Last quarter I can find the bill for I used 3668 kwh.


Ive been looking online at USwitch and they have an EDF Online S@ver 6 Dual Fuel deal.

Online S@ver 6 Dual Fuel from EDF Energy



Unit prices

Gas£91.400 Annual standing charge2.580p per kWhElectricity£91.69 Annual standing charge7.09p per kWh All prices shown are inclusive of V.A.T. at 5%

Discounts

• Gas Direct Debit Discount: 6%
• Dual Fuel Discount: £8.40
• Electricity Direct Debit Discount: 6%

All prices shown are inclusive of V.A.T. at 5%

Online S@ver 6 Dual Fuel features

• A minimum 2% discount off EDF's Standard Tariff unit rates guaranteed until the end of June 2011
• A cancellation fee of £50 may be applied to customers changing supplier or tariff before June 2011
• Paper bill available

It looks too good , does anyone know what the catch is ? (is it only guaranteed for a year to June 2011 ?). This would save me quite a bit.

Premier_2

It's a variable rate product - meaning prices can go up or down at any time.

The only guarantee is it will be at least 2% cheaper than their standard rate tariff unil June 2011
The tariff ends on 30 June 2011.(you'll be contacted shortly before then to advise on alternative tariffs the supplier can offer)
Early exit fees apply (£25 per fuel)

CIS

If its at least 2% less than my current charge then I think I'll probably go for it.