Bhrigu Express: बलिया की आन बान और शान , भृगु एक्सप्रेस है तुम्हारा नाम। हर रविवार तुमसे मिलना है मेरा काम। - Shanzil Kabir

Yo, here's the deal. The Kolkata to Delhi train ticket prices in 2013 were like this:

Fancy First Class AC: Rs 2935
Middle Class Second Class AC: Rs 1805
Basic Third Class AC: Rs 993
Budget Sleeper: Rs 390

Fast forward to 2023 and the average train ticket prices for Kolkata to Delhi are as follows:

Posh First Class AC: Rs 5100
Decent Second Class AC: Rs 3800
Okay Third Class AC: Rs 2700
Cheap Sleeper: Rs 850