Let's be clear 'you get what you pay for'. Essentially if you get a 1,300+ page hardback for ~£10 something's going to give. I won't dwell on the content since I assume everyone who's looking at this already knows what this is - if you don't, it contains about 130 pages of ~100-150-ish Hebrew OT words from Vine's unfinished notes and 1,000+ pages of Greek words from the NT (KJV English to Greek, with RV 'corrections'). A kind of English-Greek-English dictionary/thesaurus. I'm not sure about the 'concordance' bit.
So what gives? Two words: paper and printing. This is all printed on very 'nasty' paper and poorly reproduced. Well what did you/I expect for a tenner?
Summary: you get the contents but at the expense of the 'tactile' experience. You 'pays your money and you takes your choice'. Good for 'students' on a budget but personally I wish I'd bought a better version.