Could be the end of the road for the 99p signed single - this new chart rule seems to apply to singles only so far.
Singles Rules
'6.3 Pre-signed/Personalised Products Any pre-signed or personalised physical product will not be eligible for inclusion in the chart (i.e. products featuring artist's signature, initial, autograph, writings, doodles and drawings made by artist in any part of physical product prior to sale and/or any other feature that makes the product unique such as numbering).'