Higher price sticker put over the original one

I bought a pair of trousers in Dunnes recently. They were on what I initially thought was a Sale rack because it had a Red/White priced sign at the top similar to one ones normally advertising items on sale. Although when I checked afterwards, I notice that it didn't actually say Sale anywhere on it, but it just seemed designed to gave that impression.

I noticed however, that the sticker with the price on it was covering the original tag (with the bar code, item description and price)
and when I peeled it back, I found that the original price of the item was lower than the price it was at now.
So you end up paying more for the same item than someone who bought it before you.

Just curious to see if they are legally allowed to increase the price from what it was originally for sale at? shouldn't they have to stick to their own RRP?

A retailer can raise prices or reduce prices as they see fit. Why shouldn't they?

The only restriction is that to describe an item as reduced in price, it had to be on sale at the higher price for some minimum period before that, maybe 30 days?

Putting them on what looks like a sales rack may be a bit cheeky, but doesn't look illegal.

Brendan