Lancôme Génifique Serum - do you use samples?

over the past few months i accumulated quite a several ( i think it was 10 or so) of these samples of Lancôme's Genifique serum.
as the amount would equal about a third of a regular bottle and would last quite some time, i started a trial and could use it over the last 4-5 weeks ago, morning and night.
a regular bottle of 30ml would cost 79.50€.
as i only used the samples, i can't say anything about the packaging. but it looks good, though.
it's a hazy viscid liquid that spreads very well and with a slippery feeling on your skin, so that you can get along even with a small amount. i always use it on a still very slightly damp skin after my thermal water spray.
it sinks in totally, leaving no residues or film or stickyness at all. so you might feel like you haven't apply anything, which i don't like that much.
i have a oily skin, with large pores especially on my cheeks and forehead, that is prone to blackheads :(
after using it during the last month, i don't see a large improvement of my skin. i feel it is soft and moisturised, but my pores are still enlarged, i still get some zits and blackheads that don't heal faster than normal. no glow, no youthful skin (but in fact oilyness + zits are the epitome for young skin ;)  ).
it is a good moisturising serum, maybe i can only see some effect after long term use of 3 months +, but i'm not willing to pay 80€ to see if it's going to work, when my skin would be ok with a cheaper moisturiser at this time.
maybe in some years. but on the other hand, i have seen better results (in a shorter time) with the Advanced Night Repair serum by Estée Lauder, so effectiveness is not impossible ;)

have you tried this? what is your opinion?
do you use samples in general? i know many don't use face care samples as they are afraid to break out, and the effect will only show when you use it longer, but as my skin is quite uncomplicated these days, i like to use deluxe size samples.

btw, i used a Lancôme moisturizer with this, it was a 15ml deluxe sample of a men's hydrating moisturiser. i don't shy away from this, as the ingredients and technology is mostly the same with men's and women's skin care from one brand, only the scent is more herbal with the men's stuff. and as long as it doesn't grow me a beard, i don't care ;)