For investment purposes, this means users will spend less money to buy or sell LTC than BTC.
logically it's not cheaper in any way compared to its price before the airdrop.
lets make a simple calculation about this case;
at February 1,2018 its price approximately around $130 and right now February 18,2018 its price approximately around $230.
that mean the price is increasing around 70% from its average price when it's at February 1,2018.
after the event ends,
the price is drowing and move to around $160 which is down for around 40%(for example) from its peak,
do you think it's cheaper compared to its price before this news came up ?
in other words,it's not a good time to invest it because its price has not been stabilized yet.
and for investment purpose,it's like spend more money to buy LTC.