From Longman Dictionary of Contemporary Englishsnap somebody/something ↔ up phrasal verb1 BUYto buy something immediately, especially because it is very cheap People were snapping up bargains.2 
CHANCE/OPPORTUNITYto eagerly take an opportunity to have someone as part of your company, team etc Owen was snapped up by Liverpool before he’d even left school. → snap→ See Verb table
CHANCE/OPPORTUNITYto eagerly take an opportunity to have someone as part of your company, team etc Owen was snapped up by Liverpool before he’d even left school. → snap→ See Verb tableExamples from the Corpus
snap up• An obsessed public snapped them up.• Any place will snap us up.• He had met a jewel and he snapped her up.• Is that a good reason to snap it up?• She snapped him up as soon as he finished the sausage she fed him and he crawled into her bed crying.• I had thought my trader friend had snapped them up from stupid dealers at other firms.• If I don't snap you up some one else will, won't they?• The line became instantly popular and managements all over the world were impatient to snap them up whenever they were free.From Longman Business Dictionarysnap up phrasal verb [transitive]1 snap something → up to buy something immediately, especially because it is very cheapIf you see a computer for under £400, you should snap it up.2 snap somebody → up to eagerly take an opportunity to employ someone or have them as part of your teamHe so impressed the interviewing panel that they snapped him up immediately. → snap→ See Verb table 