Sorry to hear about the cracked piece. However, since it is a clearance item you may not be able to get a replacement piece. From their website (on a dropdown for that particular set, scroll all the way down and click on Returns & Exchanges):
This Is A Clearance Chess Set And All Sales Are Final. No Refunds, Returns, Exchanges Or Replacement Pieces Are Allowed. It Does Not Come With A Certificate Of Authenticity Or A Plaque.
▲ I got it from HOS at a price of $149.95, since it was a clearance item.
If you are a big fan of Fischer-Spassky chess set, this is a good deal.
But unfortunately, a knight came with a CRACK.
(I paid extra dollars for special packaging, but it is so annoying that I got a cracked piece.)
▲ White and black pieces. I like the design of reykjavik knight, which was used in legendary Fischer-Spassky 1972 match.
▲ However, pieces are much smaller than other sets, so the set looks like a miniature toy.
I put Zagreb 59 pieces from thechessstore.com for comparison.
▲ Size of King & Queen is okay. F-S 1972 king is 3,75", while zagreb king is 3.875".
▲ But knight is really tiny, as you can see in the picture.
Height of Zagreb pawn is the same as that of F-S 1972 knight.
▲ Overall, this is a good set, but white knight came with a crack.
Also, Ebonizing of the black knight was not perfect.
HOS gives 1 year warranty for this set, so I will call and ask them replace these pieces.