Aren't we expected to pay a pastor/priest/reverend/pundit for their services performed?

It is considered proper to pay a person like that for services rendered outside of the normal day-to-day scope of their duties.

To not pay them for special services is very bad form.

Payment, while not required, is appreciated. Most Churches cannot afford to pay a Priest a stipend sufficient for meeting the Cost of Living. A few dollars is always a help.

Dinner would be nice. He's a guest in your house and has come to do a service for you - in several senses. Would you have a guest who is not there to do some service go away hungry?

A true pastor or priest does not perform or conduct religious services for money. Christ and the apostles never preached for money, nor did they perform baptisms or heal the sick for a price. If a religious person performs an ordinance or conducts a service for a fee, then you may know he is not of God

No, to pay a man of God for a specific service rendered is called simony and is condemned by God (2Kings5). Spontaneous free-will donations are ok though.

It is however the responsibility of the community of that man of God to provide for his basic necessities such as housing, clothing, food and transportation (Matthew10:10 Luke10:7 1Timothy5:18); even then I have observed some abuses such as priests who claim that they need an SUV to minister to people out in mountainous areas but even when provided with such, refuse to go and provide ministry to these remote locations unless given a prohibitively high "donation" of cash by these typically poor people. Gehazi's beware !

Jesus and his disciples laid emphasis on spiritual giving. (Matthew 10:8) While appreciative listeners often came to their aid by voluntarily supplying basic needs such as food and accommodations, neither Jesus nor his disciples sought material benefits. (Luke 10:5-9) As the apostle Paul stated: “I have coveted no man’s silver or gold or apparel.” Instead, he admonished true ministers of God to “let [their] manner of life be free of the love of money.” His visits from house to house were made so that he could ‘bear witness about repentance toward God and faith in our Lord Jesus.’ (Acts 20:20, 21, 33; Hebrews 13:5) It was the religious leaders of the day who were described by Bible writer Luke as being “money lovers.”—Luke 16:9-15.

A donation is expected and deserved. The cleric has spent many hours studying how to minister to others and has devoted his/her life to spiritual matters. It takes time. Usually, clerics cannot work a regular job to maintain their devotion to spiritual things. Many times they sacrifice themselves to attain a higher level of spirituality. They deserve an offering out of respect for their position./

yes

god tells us

1Ti 5:17 Let the elders that rule well be counted worthy of double honor, especially they who labor in the word and doctrine.

1Ti 5:18 For the Scripture saith, Thou shalt not muzzle the ox that treadeth out the corn. And, The laborer is worthy of his reward.

Spiritualist often use there services to extract money from the gullible.

I know that Catholics pay for services renderd, do not know about anyone else

If they are worth it - and many aren't.