Chemistry part 1 - 6 DVDs+ 1 guidebook - please read description

Discs #4 & #5 (the Orginal) didn't work.  So I recorded on another disc .  So you will have all 6 disc.  My price of $8.00 is only for the Discs 1, 2, 3 + 1 guidebook.  The 2 non-working discs 4 & 5 plus the recorded discs of 4 & 5 are included for free.  Price includes Taxs and Shipping Costs